Product Description
Product Details of Wafer - type Check Valve
1. Basic Information
- Definition: An automatic valve that opens and closes automatically by the force generated by the flow of the medium in the pipeline itself to prevent the medium from flowing backwards. It is also known as a non - return valve, one - way valve, back - pressure valve, or reflux valve.
- Connection Method: It adopts a wafer - type connection. The valve is clamped between two pipeline flanges with bolts for installation.
2. Structural Features
- Compact Structure: It has a short structural length, only 1/4 - 1/8 of that of a traditional flanged check valve; it is small in size and light in weight, with a weight of only 1/4 - 1/20 of that of a traditional flanged check valve.
- Quick Closure: The valve disc has a short closing stroke. Some are assisted by a spring load, which enables quick closing and can significantly reduce the water hammer pressure.
- Good Performance: The flow passage is unobstructed with low fluid resistance; it has sensitive action and good sealing performance; the valve disc has a short stroke and small impact force when closing.
3. Technical Parameters
- Nominal Pressure: Generally applicable to PN1.0MPa - 42.0MPa, Class150 - 2500. Different models may vary. For example, models such as H74H and H74W have a pressure range of PN10 - PN40.
- Nominal Diameter: The range is mostly DN12 - 1200mm, NPS1/2 - 48. For models like H74H and H74W, it is DN15 - DN600.
- Applicable Temperature: It depends on the sealing and valve body materials. Rubber seal (X): -20ºC - 80ºC; Alloy steel sealing surface (H): -25ºC - 425ºC; Stainless steel main body seal: -25ºC - 200ºC. The working temperature range can reach -196 - 540ºC.
- Applicable Media: It can be used for various media such as water, steam, oil products, nitric acid, acetic acid, strongly oxidizing media, sewage, acids and alkalis, etc.
4. Materials
- Valve Body Materials: Common ones include cast steel, stainless steel (304, 316, 316L), ductile iron, etc.
- Sealing Materials: Nitrile rubber, ethylene - propylene - diene monomer rubber, polytetrafluoroethylene, alloy steel, etc.
- Spring Materials: Carbon steel, stainless steel, nickel - based superalloys, etc., selected as required.
5. Standard Specifications
- Design and Manufacture: Follow standards such as JB/T 8937, API 594, API 6D, etc.
- Structural Length: Refer to GB/T 12221 - 2005, API 594, API 6D, DIN 3202, etc.
- Connecting Flanges: Such as GB/T 9113, JB/T 74 - 90, GB/T 9112 - 9124, etc.
- Pressure - Temperature Rating: ANSI B 16.34, DIN 2401, GB/T 9124, etc.
- Testing and Inspection: GB/T 13927 - 2008, API 598, JB/T 9092, etc.
6. Application Scope
- Industrial Fields: Pipeline systems in industries such as petrochemical, metallurgy, power, light industry, and food.
- Construction Field: Water supply and drainage pipelines in high - rise buildings.
- Environmental Protection Field: Water treatment pipelines.
- Others: Pure pipelines, emergency drainage, fire protection, HVAC and other pipelines or at the outlet of pumps.
7. Product Advantages
- Compared with traditional flanged check valves, it is small in size and light in weight, facilitating handling, storage, installation, and pipeline layout, saving materials and reducing costs.
- It has a small opening pressure, and the valve disc can be fully opened under a small pressure difference.
- The overall structure is simple and compact, with a long service life and high reliability.
Packaging & Shipping
Company Profile
Rooted in a legacy of excellence, Tianjin Auswell Valve Co., Ltd. proudly adheres to a multitude of international standards including those from China, Germany, Britain, America, Japan, and Australia. Our versatile range spans nominal diameters from DN15 to DN3000, pressure classes from 0.60 Mpa to 6.4 Mpa, and is capable of operating within temperatures from -20°C to 150°C. With a rich palette of materials like gray cast iron, ductile iron, cast steel, stainless steel, and duplex steel, our repertoire includes precision-crafted soft-sealed butterfly valves, soft-sealed gate valves, check valves, filters, ball valves, globe valves, balance valves, and diaphragm valves.
Driven by a relentless pursuit of perfection, Tianjin Auswell Valve Co., Ltd. has significantly bolstered its management framework in recent years to meet and anticipate our clients' needs. We've proudly garnered the prestigious ISO9001 Quality Management System Certification and the esteemed British WARS Drinking Water Certification. Our product offerings, celebrated for their reliability, have made their mark across Europe, Asia, Africa, and beyond, earning widespread acclaim and trust from our clientele. Upholding our commitment to quality, we at Auswell Valve Co., Ltd. are eager to collaborate fully with peers in the valve industry. Together, we strive to elevate Chinese craftsmanship onto the global stage.
Tianjin Auswell Valve Co., Ltd. It is nestled in a storied historical town in China, a place celebrated for its rich military legacy and famed for its rice cultivation. Industrial Park, Xiaozhan Town, Jinnan District, Tianjin. Here, our company boasts comprehensive production capabilities, from innovative product design and precise mold manufacturing to advanced machining, meticulous rubber smelting, epoxy spraying, and rigorous valve assembly and testing.
With state-of-the-art processing equipment and exquisite craftsmanship, we assure that every product aligns with national or international standards, reflecting our commitment to excellence. Our dedication to superior craftsmanship ensures that we deliver only the highest quality products to our valued customers.
Rooted in a legacy of excellence, Tianjin Auswell Valve Co., Ltd. proudly adheres to a multitude of international standards including those from China, Germany, Britain, America, Japan, and Australia. Our versatile range spans nominal diameters from DN15 to DN3000, pressure classes from 0.60 Mpa to 6.4 Mpa, and is capable of operating within temperatures from -20°C to 150°C. With a rich palette of materials like gray cast iron, ductile iron, cast steel, stainless steel, and duplex steel, our repertoire includes precision-crafted soft-sealed butterfly valves, soft-sealed gate valves, check valves, filters, ball valves, globe valves, balance valves, and diaphragm valves.
Rooted in a legacy of excellence, Tianjin Auswell Valve Co., Ltd. proudly adheres to a multitude of international standards including those from China, Germany, Britain, America, Japan, and Australia. Our versatile range spans nominal diameters from DN15 to DN3000, pressure classes from 0.60 Mpa to 6.4 Mpa, and is capable of operating within temperatures from -20°C to 150°C. With a rich palette of materials like gray cast iron, ductile iron, cast steel, stainless steel, and duplex steel, our repertoire includes precision-crafted soft-sealed butterfly valves, soft-sealed gate valves, check valves, filters, ball valves, globe valves, balance valves, and diaphragm valves.
Driven by a relentless pursuit of perfection, Tianjin Auswell Valve Co., Ltd. has significantly bolstered its management framework in recent years to meet and anticipate our clients' needs. We've proudly garnered the prestigious ISO9001 Quality Management System Certification and the esteemed British WARS Drinking Water Certification. Our product offerings, celebrated for their reliability, have made their mark across Europe, Asia, Africa, and beyond, earning widespread acclaim and trust from our clientele. Upholding our commitment to quality, we at Auswell Valve Co., Ltd. are eager to collaborate fully with peers in the valve industry. Together, we strive to elevate Chinese craftsmanship onto the global stage.
After Sales Service
Our advantage :Hoswell valve company distinguishes itself with a comprehensive set of strengths. We possess in - house independent R & D capabilities, backed by state - of - the - art processing equipment. Our manufacturing processes adhere to industry - leading standards, and we operate a rigorous quality control system.
Product Quality Assurance
Quality Commitment and Inspection: Before leaving the factory, valves need to undergo strict quality inspections, such as pressure tests, sealing tests, etc. It is ensured that there are no casting defects like sand holes or air holes in the valves, and there are no bruises or scratches on the flange sealing surfaces. The markings of flow rate, direction, nominal pressure, diameter, material, etc. are clear and complete. It is promised that the valves are produced and inspected in accordance with national standards, and unqualified products will not leave the factory.
Warranty Period Service: Provide a certain period of warranty service. During the warranty period, for malfunctions caused by product quality problems, the manufacturer will repair or replace parts free of charge.
Technical Support
Pre-sales Consultation: Before customers purchase valves, provide them with professional technical consultations, including suggestions on product selection, specification parameters, material characteristics, applicable working conditions, etc., to help customers choose the most suitable valve products.
Installation Guidance: Provide installation guidance services, which can be carried out online (such as by phone, video, installation manuals, etc.) or offline (by sending technicians to the site) to ensure that the valves are installed correctly and avoid problems caused by improper installation.
Usage Training: Provide usage training for customer operators, enabling them to be familiar with the operation methods of the valves, key maintenance points, knowledge of troubleshooting common faults, etc., and improving the customers' ability to use and maintain the valves.
Supply of Maintenance Parts: Ensure the timely supply of maintenance parts. For the damage of parts outside the warranty period, provide the parts at a reasonable price (such as the cost price).
Regular Follow-up Visits: Regularly conduct follow-up visits to customers, understand the usage situation of the valves, and collect customers' feedback opinions, so as to improve the products and services.
FAQ
1) Q: Are you a manufacturer or trading company?
A: Hoswell Valve is a professional valve manufacturer with experienced R&D team.
2) Q: Do you have any agent or representative abroad?
A: Yes, we have agents in some countries, they can offer local service for you.
3) Q: What kinds of valve can you supply?
A: We can supply butterfly valve, ball valve, check valve and so on.
4) Q: Do you have any certificate for the valves?
A: Yes, we have CE, BV, ATEX, TS and so on.
5) Q: What's the delivery time?
A: If all the parts of the valve are ready in stock, the valves can be delivered within 7~10 days.
6) Q: What are the countries or regions you supply valves?
A: Hoswell valves have been supplied to USA, Europe, Australia, Singapore, South Africa and so on.
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